Herd immunity refers to when a population has immunity from a disease either through vaccination or recovery. Some health experts hope to reach herd immunity against COVID-19 in the United States. But people should keep in mind that reaching herd immunity does not mean that a disease has gone away, Dr. Jay Bhattacharya told The Epoch Times. The concept is built on how many people each person who contracts a disease transmits that disease to, with people with some immunity infecting fewer people, on average. “So if I get COVID, I only infect one person or fewer than one person on average and what that means is that the disease will decrease in prevalence, so that whenever the case counts are coming down, you’re actually in herd immunity,” Bhattacharya, a professor of medicine at Stanford University, said on The Epoch Times’ “American Thought Leaders.” “Herd immunity is not a synonym for zero …
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